Wind energy storage by pumped hydro station

Abstract

During the next decades, the electricity generation sector will know significant changes. This is mainly due to the increase in demand, with the limitation of traditional resources such as fossil fuels and the development of renewable energy particularly the proliferation of wind farms. Hydroelectric pumped-storage power plants, which store large amounts of energy and quickly compensate the power fluctuations, will then play a key role. It is therefore essential to find ways to fully optimize the performance of this type of plant. The main objective of this work is to study and choose the right place according to different criteria, topographical, geographical in order to install a pumped hydro station we try to size. All this is in order to ensure network stability. Such a study requires two main pumped hydro stations, namely the theoretical development and case study part. With the arming out of the three wind farms developed by Nareva holding, a major leader company in the domains of the energy and the environment, Akhfennir and Foum El Oued in the South of Morocco, and Haouma in the north of the country near to Tangier, these three parks, of a total capacity of 203 MW. Storing the surplus of the wind produced energy became a priority, hence we led a detailed study on six sites on various region of Morocco to install a hydraulic pumping station of a power of 50MW.The pumped hydro station of Abdelmoumen is situated in the upstream of the restraint of the dam Abdelmoumen on the Wadi Issen in approximately 70 kilometres in the Northeast of the city of Agadir. The study of the sizing of the pumped hydro station of Abdelmoumen led to us to the conception of a station of 50MW of power for a height difference of 800m separating both upper and lower reservoirs whose volumes are respectively 2 610 000 m³ and 749 700 m³. We conceived a Pelton turbine with a debit of turbinage of 8 m³/s, a pump spin-dries radial road of 2,4 m³ /s and penstock of 6 691m of 1m of diameter.